Dynamic electro-chemo-mechanical analysis during cyclic voltammetry

Autor:	Qibo Deng, Maxim Smetanin, Jörg Weissmüller
Rok vydání:	2011
Předmět:	Chemistry Chemo mechanical Capacitive sensing Analytical chemistry General Physics and Astronomy Thermodynamics Electrically conductive Electrolyte Electrode Physical and Theoretical Chemistry Current (fluid) Cyclic voltammetry ddc:620.11 Electrode potential
Zdroj:	Smetanin, M.; Deng, Q.; Weissmueller, J.: Dynamic electro-chemo-mechanical analysis during cyclic voltammetry. In: Physical Chemistry Chemical Physics. Vol. 13 (2011) 38, 17313-17322. (DOI: 10.1039/C1CP21781J)
ISSN:	1463-9084 1463-9076
DOI:	10.1039/c1cp21781j
Popis:	We report and validate a method for measuring the strain-response, ς, of the electrode potential of electrically conductive solids in a fluid electrolyte. Simultaneously with cyclic voltammetry, the electrode is subjected to cyclic elastic strain at frequencies of up to 100 Hz. We explore three independent strategies for separating the cyclic variation of potential or current from the voltammogram proper, and find that the results of all three are in quantitative agreement. By means of an example we explore dominantly capacitive processes at a gold electrode in H(2)SO(4) and HClO(4). The response parameter ς is not sensitive to the nature of the electrolyte. Yet, its value varies by more than a factor of two in the potential interval investigated. The potential of largest magnitude of ς agrees closely with the potential of zero charge.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2defe24216c8fd2caa824413f4d1487f https://doi.org/10.1039/c1cp21781j Zobrazit plný text záznamu